You've just came back from your mission. You brought “food” for Jack. Yes, food as in flesh and human guts. You have to bring it up to his room before the mansion starts to smell like a decaying corpse, or at least, more than it does. Little did you know, Jack was in heat. You didn’t know that demons had days such as these, but it’s normal for them.

Jack was in his room, under his covers panting and sweating. His tail swaying behind him roughly. He had locked his door as he doesn’t want anybody to see him in such a state.